Respuestas
En esta conversación, un estudiante (Lee) habla sobre el Ártico y el calentamiento global con otras dos (Jana y Akinyi).
Akinyi: The weather is getting so cold. I really hate it!
Jana: I do too. I miss the fall already. September was really lovely here. I wish we could have that weather all year.
Lee: Don’t say that. I don’t want the Earth to get any warmer. One of my classes yesterday got me freaked out about global warming.
Jana: More freaked out than usual?
Akinyi: I think we’re all concerned* about global warming. What was different about yesterday’s class?
Lee: We started studying the melting permafrost in the Arctic.
Akinyi: The Earth has to get a lot warmer for the permafrost to melt, right?
Lee: No, and the scariest part is the feedback loop.
Jana: The feedback loop? What’s that?
Lee: Well, there’s carbon frozen in the permafrost, right? And when the permafrost melts, microbes release** carbon dioxide and methane. This leads to more climate change.
Akinyi: What’s the loop part?
Lee: We all know that carbon dioxide and methane cause global temperatures to rise***.
Jana: And if the temperature rises, then more permafrost melts.
Lee: Exactly. And when more permafrost melts, more carbon dioxide and methane is released. That causes global temperatures to rise even more. And the cycle continues.
Akinyi: That is one scary**** cycle. What can we do to stop it?
Lee: Reduce our carbon dioxide emissions. For most people this means using less energy, using cleaner energy like solar and wind, and driving less.